The Dome nearly happened- Lloyd Webber proposed installing Starlight AS the millennium Dome Show, back in err.. 1997? 1998? in the planning. Had it happened they'd have closed in London and ran a huge spectacular for one year, then the show closed earlier than it did - in 2002.

However if the Dome were to become a super-casino - well, Starlight did run in in the Hilton, Las Vegas, for four years! The show touring the UK is essentially the Casino show. You can tell by the girls' costumes...